Vertical Spacing

Margin

<ul>
  <li><div class="block dxp-mt-0 dxp-mb-0"></div></li>
  <li><div class="block dxp-mt-1 dxp-mb-1"></div></li>
  <li><div class="block dxp-mt-2 dxp-mb-2"></div></li>
  <li><div class="block dxp-mt-3 dxp-mb-3"></div></li>
  <li><div class="block dxp-mt-4 dxp-mb-4"></div></li>
  <li><div class="block dxp-mt-5 dxp-mb-5"></div></li>
  <li><div class="block dxp-mt-6 dxp-mb-6"></div></li>
  <li><div class="block dxp-mt-7 dxp-mb-7"></div></li>
  <li><div class="block dxp-mt-8 dxp-mb-8"></div></li>
  <li><div class="block dxp-mt-9 dxp-mb-9"></div></li>
  <li><div class="block dxp-mt-10 dxp-mb-10"></div></li>
</ul>

Source

Padding

<ul>
  <li class="dxp-pt-0 dxp-pb-0"><div class="block"></div></li>
  <li class="dxp-pt-1 dxp-pb-1"><div class="block"></div></li>
  <li class="dxp-pt-2 dxp-pb-2"><div class="block"></div></li>
  <li class="dxp-pt-3 dxp-pb-3"><div class="block"></div></li>
  <li class="dxp-pt-4 dxp-pb-4"><div class="block"></div></li>
  <li class="dxp-pt-5 dxp-pb-5"><div class="block"></div></li>
  <li class="dxp-pt-6 dxp-pb-6"><div class="block"></div></li>
  <li class="dxp-pt-7 dxp-pb-7"><div class="block"></div></li>
  <li class="dxp-pt-8 dxp-pb-8"><div class="block"></div></li>
  <li class="dxp-pt-9 dxp-pb-9"><div class="block"></div></li>
  <li class="dxp-pt-10 dxp-pb-10"><div class="block"></div></li>
</ul>

Source